25 results about "Hydrogen peroxide breakdown" patented technology

The invention provides a hybrid power system for a dual-mode patrolling bomb and a use mode of the hybrid power system, and belongs to the technical field of aviation power. The problem that an existing patrolling bomb power system is difficult to meet the requirements for long-time cruising and instantaneous explosion acceleration at the same time is solved. The system comprises a hydrogen supply mechanism, a hydrogen peroxide supply mechanism, a fuel cell, a motor and a combustion chamber, the hydrogen supply mechanism is connected with an anode of the fuel cell, the fuel cell is connected with the motor, the motor is connected with a propeller, and the hydrogen peroxide supply mechanism is provided with two supply lines. The first supply line is connected with a cathode of the fuel cell through the hydrogen peroxide decomposition unit, the second supply line is connected with the combustion chamber, a first flow regulating valve is arranged on the first supply line, a second flow regulating valve is arranged on the second supply line, a grain is arranged in the combustion chamber, and the grain is spontaneous combustion fuel with a metal framework. The combustion chamber is connected with the exhaust nozzle. The hybrid power device is mainly used for providing hybrid power for the dual-mode patrol ammunition.

The invention discloses a method for efficiently producing pyridoxal phosphate based on a three-enzyme cascade reaction and a recombinant strain, and belongs to the technical field of biological engineering. The recombinant escherichia coli for co-expressing the pyridoxine phosphate phosphatase mutant, the pyridoxine phosphate oxidase and the hydrogen peroxide decomposing enzyme is constructed, three-enzyme synergy is realized by optimizing the copy number of a carrier, and the catalytic efficiency of a recombinant strain as a cell catalyst is improved. The invention further provides a one-pot method for preparing pyridoxal phosphate, the production cost is reduced, an efficient, green and economical biosynthesis path is provided for industrial production of PLP, and the method can be widely applied to the fields of food, medicine and the like and has important industrial value and application prospects.

The utility model relates to the technical field of advanced treatment of landfill leachate, and discloses an ultraviolet-hydrogen peroxide oxygen-based advanced treatment mechanism for landfill leachate, which comprises a reaction barrel, a water inlet pipe is fixedly connected to the side wall of the reaction barrel, a top cover is arranged on the upper surface of the reaction barrel, an output pipe is fixedly connected to the side wall of the reaction barrel, and a water outlet pipe is arranged on the side wall of the reaction barrel. A settling box is arranged on the side wall of the output pipe, a filtering box is arranged on the side wall of the settling box, an activated carbon plate is arranged in the filtering box, a water outlet pipe is fixedly connected to the side wall of the filtering box, a deep treatment mechanism is arranged on the side wall of the reaction barrel, and a fixing assembly is arranged on the side wall of the activated carbon plate. According to the device, the ultraviolet lamp is started for irradiation, meanwhile, hydrogen peroxide is conveyed into the reaction barrel through the metering pump, under irradiation of ultraviolet light, the hydrogen peroxide is decomposed to generate hydroxyl free radicals, landfill leachate is gradually degraded into small molecular substances, and through the structure, the treatment capacity of the device is improved, and the operation cost is reduced.

The invention provides a diagnosis and treatment integrated nano platform as well as a preparation method and application thereof. According to the diagnosis and treatment integrated nano platform, an organic-inorganic nano hybrid is constructed through structure optimization and function integration, four modes of PTT, PDT, SDT and CDT are organically combined innovatively, and efficient synergistic treatment of GBM is achieved through real-time monitoring of photoacoustic imaging. First, a dOMV encapsulation strategy significantly improves the ability to penetrate through the blood brain barrier. Meanwhile, the IEICO-4F has a strong near-infrared absorption characteristic and has a synergistic effect with the high catalytic activity of the mesoporous platinum nanoparticles. Under the laser / ultrasonic excitation condition, the diagnosis and treatment integrated nano platform shows excellent photo-thermal conversion performance, the Fenton reaction rate can be increased, endogenous hydrogen peroxide can be continuously catalyzed to be decomposed to generate oxygen, and the tumor hypoxia state is effectively relieved. The series of reactions further enhance the generation of ROS, activate a Caspase-1 / GSDMD mediated pyroptosis pathway, finally achieve an efficient tumor inhibition effect, and successfully break through the limitation of a single treatment mode.

The invention is applicable to the technical field of titanium alloy surface treatment, and provides a titanium alloy nitric-acid-free chemical polishing solution and a preparation method thereof, and every 1L of the polishing solution comprises the following components: 100-150g of ammonium bifluoride, 150-250g of hydrogen peroxide with the concentration of 50%, 200-350g of phosphoric acid with the concentration of 85%, 60-120g of modified ethylene glycol, 10-20g of a compound stabilizer, 5-10g of a modified corrosion inhibitor and the balance of water. The modified ethylene glycol is ethylene glycol modified by a silane coupling agent KH550, and the modified corrosion inhibitor is a modified product of thiourea grafted maleic anhydride; through raw material modification and component synergy, the titanium alloy surface treatment effect can be improved, generation of nitric oxide toxic gas can be completely eradicated, decomposition of hydrogen peroxide and excessive corrosion of titanium alloy are avoided, and the polishing solution is suitable for efficient and environment-friendly polishing of titanium alloy parts in complex shapes.

The invention relates to the field of hydrogen peroxide production, in particular to a hydrogen peroxide decomposition inhibition device for hydrogen peroxide production, which comprises a tank body, the device further comprises a feeding pipe; a cooling cavity is formed in the tank body; the tank body is communicated with a feeding pipe, and the feeding pipe is provided with a feeding valve; the tank body is communicated with a discharge pipe, and the discharge pipe is provided with a discharge valve; the tank body is fixedly connected with a plurality of spring rods I; the telescopic ends of all the spring rods I are jointly and fixedly connected with a cover plate, and the cover plate makes contact with the tank body. The cover plate is fixedly connected with a circular plate, and the circular plate is slidably connected with the interior of the tank body. When the water bag sprays water to dilute the hydrogen peroxide in the leakage area, the electromagnetic valve is controlled to be opened, so that cooling water in the cooling cavity enters the water bag, water in the water bag is cooled, then the hydrogen peroxide in the leakage area is cooled by the cooling water sprayed out of the water bag, and the decomposition rate of the leaked hydrogen peroxide is effectively restrained.

To provide a detergent set and a washing method in which bubbles generated after mixing an enzyme with washing treatment water containing hydrogen peroxide are conspicuous.SOLUTION: The detergent set includes an oxidizing agent which is an inorganic peroxide generating hydrogen peroxide in the presence of water, an alkaline agent, an enzyme having catalase activity decomposing hydrogen peroxide into water and oxygen, and an amphoteric surfactant, wherein the oxidizing agent and the enzyme are stored in a non-reactive state.SELECTED DRAWING: Figure 1

The application belongs to the technical field of fine chemical industry, and particularly relates to a continuous flow synthesis method and device of diene diepoxide. The method comprises the following steps: mixing an organic phase containing a diene compound, a catalyst and a pyridine-acetic acid ligand, and an aqueous phase containing hydrogen peroxide and a specific buffer system through a micro-mixer to form a water-in-oil micro-dispersion system; making the micro-dispersion system enter a micro-reactor to perform an epoxidation reaction; then performing cooling treatment on the reaction liquid; removing the aqueous phase through a membrane separator; and obtaining the diene diepoxide through post-treatment. By introducing the buffer system, the pH of the reaction system is stabilized at 10.5-12.0, the decomposition of hydrogen peroxide and the deactivation of methyltrioxorhenium are effectively inhibited; in combination with the continuous flow technology, the reaction process is accurately controlled and intrinsically safe, and the reaction time is significantly shortened; and the conversion rate of the diene compound and the yield of the target epoxide are both significantly improved.

The application belongs to the technical field of space environment disinfection, and provides a self-supporting multi-component composite nano catalyst for decomposing and vaporizing hydrogen peroxide and a preparation method thereof. The composite nano catalyst is an AlCrFePt / NF quaternary composite nano catalyst, which comprises a catalyst active component and a catalyst active component carrier. The catalyst active component is composed of Al, Fe, Cr and Pt, the catalyst active component carrier is foam nickel, and the catalyst active component is uniformly loaded on the surface of the catalyst active component carrier base. The composite nano catalyst can efficiently decompose hydrogen peroxide into water and oxygen, and has good stability. The preparation method is a one-pot hydrothermal method, which does not require special instruments and equipment, is simple in process, cost-saving, easy to operate, and suitable for large-scale production. The problems of high cost and low catalytic efficiency of the catalyst for decomposing and vaporizing hydrogen peroxide are solved.

In this hydrogen peroxide concentration measurement system, a sample water collection tube (3) is branched into a first passage (4) and a second passage (5), and the first passage (4) can be switched between a dissolved oxygen concentration measurement flow passage (7) and a first circulation flow passage (9). The second passage (5) can be switched between a hydrogen peroxide decomposition flow passage (11) and a second circulation flow passage (13). Further, the dissolved oxygen concentration measurement flow path (7) can be switched between the discharge pipe (14) and the second circulation flow path (13). In addition, the hydrogen peroxide decomposition flow path (11) can be switched between the discharge pipe (14) and the first circulation flow path (9). As a result, it is possible to switch between the continuous flow of the sample water (W) from the dissolved oxygen concentration meter (8) to the catalyst resin column (12) or the continuous flow of the sample water (W) from the catalyst resin column (12) to the dissolved oxygen concentration meter (8). As long as the hydrogen peroxide concentration measurement system is adopted, the time until the measured value after the measurement system is switched is stable can be shortened, and the consumption of sample water is low.

The application discloses a method for simultaneously degrading organic wastewater and reducing noble metal, and belongs to the technical field of sewage treatment and metal recovery. In view of the deficiency of the traditional technology in the field of simultaneous organic wastewater degradation and noble metal ion reduction, a new laser-driven electrochemical cell is provided. The cell takes titanium as an anode and platinum as a cathode, utilizes the potential difference between the two poles to drive electron migration, realizes electrochemical reduction of silver ions. At the same time, laser irradiation is adopted to excite the anode to form plasma, so that water and hydrogen peroxide are decomposed to generate hydroxyl radicals to efficiently degrade MB. In addition, the laser also has the ability to directly photolyze MB and enhance the electrochemical activity of the cell to synergistically promote the rapid reduction of Ag(I). The application provides an efficient and green new way for organic wastewater treatment and noble metal resource utilization.

A device for recycling sulfuric acid is provided. A container has an inner space. An inlet is located on the first side of the container for introducing a liquid containing sulfuric acid and hydrogen peroxide through a pump. An outlet is located on the second side of the container for exhausting the treated liquid from the container, and the first side and the second side are opposite sides. IR lamp and UV lamp are located in the inner space of the container for making contact with the liquid. IR radiation emitted from the IR lamp and UV radiation emitted from the UV lamp decompose the hydrogen peroxide in the liquid to water and oxygen. The IR radiation heats the liquid to 90° C. to 130° C., and the oxygen is exhausted through the air hole.

The application provides a preparation method of azodicarbonamide, comprising the following steps: S1, uniformly mixing hydrogen peroxide solution with a stabilizer and a cocatalyst to obtain a first reaction solution; S2, mixing biurea, water and a catalyst to obtain a second reaction suspension; S3, dropwise adding the preheated first reaction solution into the second reaction suspension to perform an oxidation reaction, and obtaining azodicarbonamide after the reaction is completed; the stabilizer in the step S1 is one or more of 1,3-diamino-2-hydroxypropane-N,N,N',N'-tetraacetic acid, 8-hydroxyquinoline, sodium dihydrogen pyrophosphate and nitrilotrimethylene phosphoric acid. In the application, the selection of the hydrogen peroxide stabilizer and the cocatalyst can reduce the decomposition speed of hydrogen peroxide and improve the utilization rate of hydrogen peroxide, so that the loss of raw materials is reduced, the cost of raw materials is reduced, and the production profit is improved.

The present invention provides a hydrogen peroxide decomposition system that can effectively decompose hydrogen peroxide contained in a liquid to be treated while reducing equipment costs. The hydrogen peroxide decomposition system in the embodiment includes a plurality of hydrogen peroxide decomposition devices 1, 2, and 3, each of which includes a decomposition tank 10 that stores activated carbon 11 for decomposing hydrogen peroxide contained in a liquid to be treated, a storage tank 20 for storing the liquid to be treated that has passed through the activated carbon 11 of the decomposition tank 10, and a circulation feed section 30 that feeds the liquid to be treated stored in the storage tank 20 to the activated carbon 11. In the plurality of hydrogen peroxide decomposition devices 1, 2, and 3, the liquid to be treated in the hydrogen peroxide decomposition device 3 at the final stage is discharged when the hydrogen peroxide concentration of the liquid to be treated in the hydrogen peroxide decomposition device 3 at the final stage is below a target concentration, and the liquid to be treated in each of the hydrogen peroxide decomposition devices 1, 2, other than the final stage, is fed to the hydrogen peroxide decomposition device at the next stage, and the plurality of hydrogen peroxide decomposition devices 1, 2, and 3 are configured so that the liquid to be treated in each of the hydrogen peroxide decomposition devices is circulated below a predetermined temperature.

The invention relates to a hydrogen peroxide sensor (1), comprising a passive measuring sensor (2) and a passive reference sensor (3). These sensors can be brought into contact with a test gas. The measuring sensor (2) is designed to catalytically convert hydrogen peroxide (5), for example by means of a catalytically active layer (8). The measuring sensor (2) is a temperature sensor (6). The measuring sensor (2) can thus detect the heat produced during decomposition of the hydrogen peroxide (5) at the measuring sensor (2).

The invention belongs to the technical field of bioengineering and electrochemical chemical engineering, and particularly relates to an electrochemical-biological oxidoreductase cascade catalysis method. The electrochemical-biological combined synthesis technology is adopted, threonine deaminase is accelerated and promoted to catalyze threonine in an electrolysis mode, hydrogen peroxide generated in the oxidation process is promoted to be decomposed to generate oxygen and water, and therefore the effect of catalase is completely replaced. Meanwhile, in the electrolytic tank, part of water molecules in the reaction system can generate oxygen at the anode of the electrolytic tank, and oxygen is provided for DAAO; and when a working electrode is adjusted from a platinum electrode to foam titanium and anode and cathode conversion is carried out, NAD < + > can be effectively reduced to NADH, and a coenzyme regeneration system is provided for conversion of 2-ketobutyric acid to L-2-aminobutyric acid and reduction of PPO to L-PPT. A technical route of adding catalase, alcohol dehydrogenase and isopropanol required by the L-PPT obtained by splitting the D, L-PPT is abandoned.

This disclosure provides a portable hemostatic bandage system, which comprises two formulations comprising siloxanes and blowing gas generating agents as well as a dual container device, optionally a dual syringe applicator, for in situ construction of a sponge-like polymer foam as hemostatic bandage material. Two formulations kept separately in a dual container device react instantly with each other when forced to mix, and as a result, decomposition of hydrogen peroxide occurs to generate a blowing gas O2 and heat, and consequently siloxane polymer curing occurs to form polymer foam inside the dual container device. When the blowing foam is applied to a bleeding wound, it forms a sponge plug within a few minutes to control hemorrhage. This portable hemostatic bandage system can be easily used at ambient temperatures, and it is a cost-effective method to control hemorrhage.

The invention discloses a benzothiadiazole-based conjugated polymer and a preparation method and application thereof, and the preparation method comprises the following steps: mixing and dissolving 4, 7-dibromo-2, 1, 3-benzothiadiazole and a compound of formula 1 in an organic solvent, adding a catalyst, and reacting under a protective atmosphere to obtain the benzothiadiazole-based conjugated polymer. The novel benzothiadiazole-based hydrophobic conjugated polymer is successfully developed by a simple solvothermal method, and has the following advantages as a photocatalyst: enhanced oxygen adsorption capacity, optimal redox center distribution, quicker carrier separation and transfer, and higher catalytic activity. The hydrogen peroxide generation speed is higher, the hydrogen peroxide decomposition speed is extremely low, the performance of photocatalytic hydrogen peroxide is remarkably improved, and the generation amount reaches 2.54 mmol g <-1 > h <-1 >.

Methods and related systems for treating ammonia- and hydrogen peroxide-containing streams are provided. Some embodiments relate to decomposing at least some hydrogen peroxide in a first stream that contains both ammonia and hydrogen peroxide. The resulting stream may be treated (e.g., using a stripper and scrubber subsystem) to enrich the ammonia while, in some instances, using the ammonia to at least partially neutralize a second stream that contains sulfuric acid and hydrogen peroxide. The first and / or second stream may contain and / or be derived from semiconductor processing wastewater. The resulting neutralized stream may have a sufficiently high pH for further hydrogen peroxide decomposition. The methods and systems may further produce ammonium sulfate, which may be further concentrated (e.g., to form a solid ammonium sulfate salt).

The present invention relates to a method for producing a product using an enzyme comprising a prenylated flavin mononucleotide (prFMN) cofactor in a recombinant microorganism, wherein the recombinant microorganism is grown in a culture medium in the absence of air, and wherein a prFMNH2 precursor is oxidised with molecular oxygen (O2) derived from decomposition of hydrogen peroxide (H2O2) to produce the active prFMN cofactor. Further provided are recombinant microorganism for use in such methods.

The application is suitable for the technical field of titanium alloy surface treatment, and provides a nitric acid-free chemical polishing solution for titanium alloy and a preparation method thereof. Each 1L of the polishing solution comprises the following components: 100-150g of ammonium hydrogen fluoride, 150-250g of 50% concentration hydrogen peroxide, 200-350g of 85% concentration phosphoric acid, 60-120g of modified ethylene glycol, 10-20g of a composite stabilizer, 5-10g of a modified corrosion inhibitor, and water as the balance; the modified ethylene glycol is ethylene glycol modified by silane coupling agent KH550, and the modified corrosion inhibitor is a modified product of thiourea grafted maleic anhydride; through modification of raw materials and synergy of components, the application can improve the surface treatment effect of titanium alloy, completely eliminate the generation of toxic nitrogen oxide gas, avoid the decomposition of hydrogen peroxide and the excessive corrosion of titanium alloy, and is suitable for efficient and environmentally-friendly polishing of titanium alloy parts with complex shapes.

A shale gas formation oxidation induced rock burst stimulation method, the method including: performing hydraulic fracturing stimulation on a shale gas well to be fractured; and in the hydraulic fracturing process, injecting slick water A (f), oxidation fluid (e), slick water containing glue liquid (d), catalytic decomposition fluid (c), and slick water B (b) in a slug mode in sequence, and integrating shale physical characteristics and chemical thermodynamic properties to provide a fracturing fluid usage and the radius of the oxidation induced rock burst calculation formula. According to the method, the methane gas released by the shale gas formation after fracturing by the slick water A (f) is mixed with oxygen generated by the decomposition of hydrogen peroxide in the oxidation solution (e), and the shale gas formation is burst, such that the safe, efficient and damage-free multi-scale yield increasing stimulation of hydraulic fractures.

The present invention provides a method for producing a three-dimensional object and an ink set for producing a three-dimensional object which can even produce, for example, a complex-shaped three-dimensional object made of a soft material with good fabrication accuracy. The present invention relates to a method for producing a three-dimensional object, including: individually discharging (a) a model material ink containing a crosslinkable polymer and (b) a support material ink containing a support material; and removing an object of the support material ink after the crosslinkable polymer is crosslinked, wherein one of the model material ink (a) and the support material ink (b) further contains a hydrogen peroxide decomposer and the other of the model and support material inks further contains hydrogen peroxide or a hydrogen peroxide donor, and the discharged hydrogen peroxide decomposer decomposes the discharged hydrogen peroxide to crosslink the crosslinkable polymer, thereby fabricating a three-dimensional object.

This invention relates to the field of chemical purification technology, specifically to a method for improving the purity of hydrogen peroxide. The method includes sequentially subjecting an industrial-grade hydrogen peroxide solution to low-temperature pre-filtration, low-metal precipitation activated carbon fiber organic impurity capture, bifunctional confined trapping membrane contact adsorption purification, ceramic nanofiltration, and terminal microporous filtration; the surface of the bifunctional confined trapping membrane is immobilized with N-methyl-D-glucosamine groups and 1-aminoethylidene diphosphonic acid. This method can simultaneously reduce the content of organic impurities, metal ions, borosilicate impurities, and particulate matter in hydrogen peroxide, and reduce the risk of material leaching and hydrogen peroxide decomposition, making it suitable for the preparation of high-purity hydrogen peroxide.

The utility model provides a continuous production device for o-hydroquinone and hydroquinone, and relates to the technical field of chemical synthesis. According to the utility model, phenol and hydrogen peroxide are used as raw materials, and high-purity catechol and hydroquinone products are continuously produced through the reactor, the filtering device, the hydrogen peroxide decomposition reactor, the extraction tower and the refining unit; by arranging the filter device, the extraction tower, the extraction agent recovery tower, the phenol removal tower I, the tar removal tower, the phenol removal tower II, the catechol tower, the light component removal tower and the hydroquinone tower, materials after reaction are separated and purified, high-purity catechol and hydroquinone products are obtained, the whole technological process is short, and the yield is high; according to the utility model, the extraction tower is adopted to replace the dehydration rectification operation in the traditional process to remove phenol-containing wastewater, so that the phenol recovery rate is improved, and the subsequent wastewater treatment burden is reduced; the detarring tower is placed in front of the second dephenolization tower, so that the retention time of tar impurities in the whole process system is shortened, and the safety of the whole process is improved.